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Make recovering from command failure more robust.

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This commit is contained in:
Johannes Mockenhaupt 2017-12-19 23:43:08 +01:00
parent 715366b2b4
commit f4c1f4a3a1
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GPG key ID: 9E1EA6AF7BBBB0D1
1 changed files with 14 additions and 7 deletions
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21
ruffyscripter/src/main/java/de/jotomo/ruffyscripter/RuffyScripter.java
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@ -324,12 +324,12 @@ public class RuffyScripter implements RuffyCommands {
return result;
} catch (CommandException e) {
log.error("CommandException while executing command", e);
recoverFromCommandFailure();
return activeCmd.getResult().success(false).state(readPumpStateInternal());
PumpState pumpState = recoverFromCommandFailure();
return activeCmd.getResult().success(false).state(pumpState);
} catch (Exception e) {
log.error("Unexpected exception communication with ruffy", e);
recoverFromCommandFailure();
return activeCmd.getResult().success(false).state(readPumpStateInternal());
PumpState pumpState = recoverFromCommandFailure();
return activeCmd.getResult().success(false).state(pumpState);
} finally {
Menu menu = this.currentMenu;
if (activeCmd.getResult().success && menu != null && menu.getType() != MenuType.MAIN_MENU) {
@ -416,12 +416,12 @@ public class RuffyScripter implements RuffyCommands {
/**
* Returns to the main menu (if possible) after a command failure, so that subsequent commands
* reusing the connection won't fail.
* reusing the connection won't fail and returns the current PumpState (empty if unreadable).
*/
private void recoverFromCommandFailure() {
private PumpState recoverFromCommandFailure() {
Menu menu = this.currentMenu;
if (menu == null) {
return;
return null;
}
MenuType type = menu.getType();
if (type != MenuType.WARNING_OR_ERROR && type != MenuType.MAIN_MENU) {
@ -432,6 +432,12 @@ public class RuffyScripter implements RuffyCommands {
log.warn("Error returning to main menu, when trying to recover from command failure", e);
}
}
try {
return readPumpStateInternal();
} catch (Exception e) {
log.debug("Reading pump state during recovery failed", e);
return new PumpState();
}
}
/**
@ -480,6 +486,7 @@ public class RuffyScripter implements RuffyCommands {
state.timestamp = System.currentTimeMillis();
Menu menu = currentMenu;
if (menu == null) {
log.debug("Returning empty PumpState, menu is unavailable");
return state;
}